Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d2c174da631a50…

MALICIOUS

PDF

87.0 KB Created: 2021-02-05 06:08:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d7e12dee98477d33999362e29a80874d SHA-1: 470a60959c078e8fd06d772896d4452caf956eb6 SHA-256: 70d2c174da631a50c521cb4a9f71fce58cb050267fc16932b46c256708e97157
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, https://jottigo.ru/aws?utm_term=band+saw+cutting+machine+manual, suggests a phishing or malware distribution lure, likely disguised as a manual. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to exploit vulnerabilities or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/aws?utm_term=band+saw+cutting+machine+manual PDF link annotation
    • https://cdn.sqhk.co/titabofasika/Viihahj/pepper_marketing_company.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453115/normal_601ba8067b06a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384164/normal_5feed7a271b8f.pdfIn PDF document text
    • http://vostokzapad.su/birdy_the_mighty_decode_the_ciphercykk3.pdfIn PDF document text
    • https://cdn.sqhk.co/beratinuga/iNy4ZoM/thai_alphabet_write_tracing_consonant_vowel_numbers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_5fd64448c638d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460241/normal_5fe99f5327d9d.pdfIn PDF document text
    • http://de-bewertung-889562.icu/plastic_animation_paper_tutorial5n3zb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413111/normal_5fdf14ffd8225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456699/normal_60146351656f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506170/normal_6007c7e99ce92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_6016046a38e34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489732/normal_5ffc1cd28bf37.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/gexilamunawogogitezax.pdfIn PDF document text
    • http://gavativu.epizy.com/tipebewutar.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BE 5396 bytes
SHA-256: 3100e2842a82d74f79054e71ab219b423e756d28b05be014e3933db7d8507b7d
font_01_sfnt_off00010509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10509 11108 bytes
SHA-256: 95499d314e70cb6bc092094b1bebf17cbb78f5fae6cc36120cb61f2bec2656d0
font_02_sfnt_off00012a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A11 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off00013f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F62 3876 bytes
SHA-256: 9aaa957fde08c2ec6d11ca2033c53aaf20df0f5381a0653f801991e730b87c76

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